Triple
T144332
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Alexandria |
E2920
|
entity |
| Predicate | transportInfrastructure |
P1777
|
FINISHED |
| Object |
Alexandria tram
The Alexandria tram is one of the oldest operating electric tram systems in the world, serving as a key component of public transportation in the Egyptian coastal city of Alexandria.
|
E17305
|
NE FINISHED |
How this triple was built (4 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Alexandria tram | Statement: [Alexandria, transportInfrastructure, Alexandria tram]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Alexandria tram Context triple: [Alexandria, transportInfrastructure, Alexandria tram]
-
A.
Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
-
B.
Metrobus
Metrobus is the public bus transit system serving the Washington, D.C. metropolitan area, operated alongside the Metrorail network by the Washington Metropolitan Area Transit Authority (WMATA).
-
C.
Mattapan Trolley
The Mattapan Trolley is a historic light rail line in Boston that operates vintage PCC streetcars between Ashmont and Mattapan stations.
-
D.
C-TRAN
C-TRAN is the public transit agency serving Clark County and the Vancouver, Washington area, providing bus and express services often coordinated with Portland’s TriMet system.
-
E.
Roosevelt Island Tramway
The Roosevelt Island Tramway is an aerial cable car system in New York City that connects Roosevelt Island to Manhattan, offering both public transit and scenic views of the skyline.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Alexandria tram Triple: [Alexandria, transportInfrastructure, Alexandria tram]
Generated description
The Alexandria tram is one of the oldest operating electric tram systems in the world, serving as a key component of public transportation in the Egyptian coastal city of Alexandria.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Alexandria tram Target entity description: The Alexandria tram is one of the oldest operating electric tram systems in the world, serving as a key component of public transportation in the Egyptian coastal city of Alexandria.
-
A.
Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
-
B.
Metrobus
Metrobus is the public bus transit system serving the Washington, D.C. metropolitan area, operated alongside the Metrorail network by the Washington Metropolitan Area Transit Authority (WMATA).
-
C.
Mattapan Trolley
The Mattapan Trolley is a historic light rail line in Boston that operates vintage PCC streetcars between Ashmont and Mattapan stations.
-
D.
C-TRAN
C-TRAN is the public transit agency serving Clark County and the Vancouver, Washington area, providing bus and express services often coordinated with Portland’s TriMet system.
-
E.
Roosevelt Island Tramway
The Roosevelt Island Tramway is an aerial cable car system in New York City that connects Roosevelt Island to Manhattan, offering both public transit and scenic views of the skyline.
- F. None of above. chosen
Provenance (5 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69a2521e35c08190b28e5c9f1e3c9b59 |
completed | Feb. 28, 2026, 2:25 a.m. |
| NER | Named-entity recognition | batch_69a257e935bc8190a03e54a10e9ba6f7 |
completed | Feb. 28, 2026, 2:50 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a2bf691a848190a4f6e40d9aea2168 |
completed | Feb. 28, 2026, 10:11 a.m. |
| NEDg | Description generation | batch_69a2c1179c6c8190a118c6f4ef8d555e |
completed | Feb. 28, 2026, 10:19 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a2c1c769f08190b0a8b372e13fc5de |
completed | Feb. 28, 2026, 10:21 a.m. |
Created at: Feb. 28, 2026, 2:31 a.m.